My guess is that he dons THE HOOD at the end of the flick, setting up a sequel.
I'm also guessing that the lack of the mirrored helmet is due to the involvement of Larry Hama, who (as I recall; I need to go back and double-check this) always disliked using that look in the comics and was always being told by Hasbro when to include it -- which was generally to push a new toy line.
I'm also guessing that the lack of the mirrored helmet is due to the involvement of Larry Hama, who (as I recall; I need to go back and double-check this) always disliked using that look in the comics and was always being told by Hasbro when to include it -- which was generally to push a new toy line.